Improvement in fruit-jars



dnte tudes @am einen.

ROBERT MCGULLY, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 102,024, dated April 19, 187 0; antcdated April 2, 1870.

IMPROVEMENT IN FRUIT-JARS.

The Schedule referred to in these Letters Patent and making part of the same.

I, ROBERT HCGULLY, of the city of Philadelphia, and State of Pennsylvania, have invented a new and improved Air-tight Fruit-Jar, of which the following is a full and exact description, reference being had to the accompanying drawing, sheet No. 4, making a part of this specication.

One great objection to most of the fruitjars now in use Aarises from the character of the fastenings employed to hold the cap or cover in its position on the jar, these fastenings being rigid and u'nyielding, making no allowance whatever for changes within, and, besides, are inconvenient in use, requiring to be fastened whilst hot, whereas my jar obviates bot-h of these objections, and is as cheaply constructed.

In the accompanying drawings- Figure l represents a pelspective view of the top part of the jar, with. the cap in position. p lfiguref? represents a, perspective view of the top of the jar, with the cap or cover removed, exposing the wire spring by which the cap is held in position.

Figure 3 is a vertical section ofthe cap or cover and the top part ot' the jar.

. Figures 4 and5 are modifications of figs. '1 and 2.

A represents the cap or cover, made ofnietal or other suitable material.

B, a portion of the top part of the jar.

l is a shoulder around the neck ot' the jar, with a groove in the neck to receive and hold the rubber jacket.

gis a bead around the outside of the shoulder d, with breaks c through which the lugs b on the inside ofthe cap will pass when the cap lis put in position.

a is a rabbet or groove (shallow and ot' suitable width) around the outside of the neck of the jar, just below the edge of the mouth or bead g.

ff are springs, one end of each being fastened or inserted intoanindentation inst-he upper edgeV of the groove a, just to the left of the break'c, whilst the other `end of the wire is permitted to play in an indented slot inthe opposite side of the neck of the jar, at the lower edge ofthe groove a or a lug, It, may be made instead of the slot ou the lower edge of the groove a, nearly opposite the indentation, for, the upper end of the Wire, between which lug h and the lower edge of the groove a the wire spring can slide when the top is used.

e is a rubber gasket on which the capA, whenl in position, will rest. 'It will be seen that the gasket Y can occupy different positions at the top or'bottom ot the neck.

The cap is constructed with lugs, bon its inside, tov correspond with the breaks c c in the bead g, so that, when the lugs pass through said breaks, the upper edges of the lugs will come just below the lower edges of the wire springs ff, and the inside of the top of' the cap will rest on the rubber gasket, as in fig. 5, or the lower edge of' the cap rest on the gasket, as in figs. 2 and 3. It will, therefore, be seen that the gasket can occupy either position.

The cap being placed on the jar with thc lugs passing through the breaks in the bead, it is then turned to the left;` which will bring the lugs under and in contact with the wire springs ff, sc that, when the internal pressure on the inside""of the cap` arising from heat in cooking, or by fermentation, is greater. than\ the pressure exercised by the springs, the cap will be lifted up until the internal pressure is relieved, when the springs will return the cap to its former position.

It will thus be sen that the cap can be placed in position after the jar is filled with raw or partially cooked fruit, and at the same time it will permit the escape of heated air, and provide against bursting by fermentation, as also obviate the necessity of handling the covers when hot.

In fig. 5 the lng 71. is dispensed with, the spring wire being held in posit-ion in alsoinewhat different manner.

I do not confine myself to the particular forni or number of springs described, but, having explained my invent-ion,

Vhat I claim new, and desire to secure by Letters Patent of the United States, is-

A fruit or other jar,` can, or vessel, having a spring around its neck or mouth for the cap or cover to enlgage with, in the manner substantially as shown and described, and for the purpose .set forth.

ROBERT MCCULLY.

Witnesses:

WM. L. SHAT'IUCK, Gao. S. SELDEN. 

